Setup docker (#6396)

* setup-docker: install and run docker inside integration test VMs

* must pip install requests to satisfy community.docker requirements

* add Ubuntu configuration to setup_docker

* Update tests/integration/targets/mssql_script/tasks/main.yml

* Update tests/integration/targets/mssql_script/tasks/main.yml

* docker_pacakges variable non-existent by default

* add setup_docker to keycloak_groups

* add setup_docker to keycloak_groups

* removed unused file tasks/nothing.yml

* add README

* add copyright notice to readme file

* Update tests/integration/targets/setup_docker/README.md

* rolled back the boilerplate disclaimer to mssql_script tasks/main.yml

tests/integration/targets/setup_docker/tasks/default.yml

@@ -0,0 +1,21 @@
+---
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# dnf -y install dnf-plugins-core
+# dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo
+# sudo dnf -y install docker-ce docker-ce-cli containerd.io docker-compose-plugin
+
+- name: Install docker
+  become: true
+  package:
+    name: "{{ item }}"
+    state: present
+  loop: "{{ docker_packages }}"
+  notify:
+    - Remove Docker packages
+
+- name: Inform that docker is installed
+  set_fact:
+    has_docker: true